CN104483820A

CN104483820A - Spectral colorimetric apparatus and image forming apparatus including the same

Info

Publication number: CN104483820A
Application number: CN201410767630.1A
Authority: CN
Inventors: 小林久伦; 古森慎; 尾原光裕
Original assignee: Canon Inc
Current assignee: Canon Inc
Priority date: 2010-10-28
Filing date: 2011-10-28
Publication date: 2015-04-01
Also published as: EP2869047A1; CN102540804B; US8958069B2; KR20120044909A; CN102540804A; EP2869047B1; US20130242299A1; KR101415808B1; EP2447686B1; US8462342B2; US20120105851A1; EP2447686A1; EP2664904A1

Abstract

The invention refers to a spectral colorimetric apparatus and an image forming apparatus including the same. The spectral colorimetric apparatus includes a housing which includes a side wall. An outer surface of the side wall is an adjustment surface capable of adjusting a position of a light receiving member by moving in a state in which the light receiving member abuts on the adjustment surface. The light receiving member is supported by the side wall of the housing in a state in which the light receiving member abuts on the adjustment surface and receives a light beam that is dispersed by a concave surface reflection type diffraction element and passes through an opening portion. The adjustment surface is parallel to a tangential line at a part of a Rowland circle of the concave surface reflection type diffraction element, through which a light beam received by the light receiving member passes.

Description

Spectral colorimetric equipment and comprise the image forming apparatus of this spectral colorimetric equipment

This divisional application is 201110332405.1 based on application number, and the applying date is on October 28th, 2011, and denomination of invention is the divisional application of the Chinese patent application of " spectral colorimetric equipment and comprise the image forming apparatus of this spectral colorimetric equipment ".

Technical field

The present invention relates to the image forming apparatus of such as duplicating machine and laser beam printer (LBP) and so on, and relate more particularly to use the multiple photo-electric conversion elements arranged with array way to detect the spectral colorimetric equipment (spectral colorimetric apparatus) of the light beam using the dispersion of reflective diffraction element to object execution colour recognition or colourimetry.

Background technology

Sometimes, the tone variation in coloured image is caused for the formation of the image forming apparatus of coloured image.Especially, in electrophotographic system, due to the change of environment for use and deteriorated with age, transfer efficiency changes with color according to the charge capacity of the toner of drum sensitivity, use and the sheet type of use.Therefore, colour mixture ratio can depart from predetermined value, and this may affect the tone of institute's printed drawings picture.

This phenomenon occurs, and tone may be changed due to the difference between image forming apparatus.Therefore, the consistance of the tone that can not keep the coloured image formed is worried.In order to address this is that, control the condition for being formed image by image forming apparatus by the tone on use colorimetric device measuring surface.Therefore, the consistance of the tone of the coloured image formed is kept.

Japanese patent application No.2009-110884 (that is, Japanese Patent Application Publication No.2010-276599) discusses the colorimetric equipment of following configuration.Colorimetric equipment is spectral colorimetric equipment, and it comprises lamp optical system for irradiating test surfaces, for the light beam reflected from test surfaces being directed to the guide-lighting optical system of dispersive optical system and being used for obtaining by making the light beam dispersion of guiding the dispersive optical system of spectral intensity distribution.

In order to utilize this spectral colorimetric equipment to measure the tone of test surfaces more accurately, spectral colorimetric equipment must be placed relative to the light beam reflected from test surfaces with high precision by the position of adjustment optics and orientation.In addition, it is essential that spectral colorimetric equipment is less, the precision of the position of optics and the adjustment of orientation becomes higher.

Such as, if lamp optical system, guide-lighting optical system and dispersive optical system are housed in a shell in order to make device miniaturization, then straitly limited, not contact other optics for electrical connection system with for the space that the instrument that its multiaxis adjusts is inserted into.Therefore, this operation is difficult to perform, and the worry that the throughput rate that there is equipment reduces.

Summary of the invention

The present invention relates to the spectral colorimetric equipment be miniaturized while guaranteeing its throughput rate and the image forming apparatus comprising this spectral colorimetric equipment.

According to an aspect of the present invention, a kind of spectral colorimetric equipment comprises: be configured to the concave reflection type diffraction element making incident beam dispersion, comprise the linear transducer of multiple photo-electric conversion element, each in described multiple photo-electric conversion element is configured to receive the light beam by the dispersion of described concave reflection type diffraction element, shell, described shell comprises sidewall and is configured to support described concave reflection type diffraction element and described linear transducer, and opening portion, described opening portion to be formed in the described sidewall of described shell and to be arranged such that by the light beam of described concave reflection type diffraction element dispersion by described opening, the outside surface of wherein said sidewall can operate the adjustment surface as the position can passing through the described linear transducer of mobile adjustment while adjacent described linear transducer, and described linear transducer to be received by described concave reflection type diffraction element dispersion and by the light beam of described opening portion by the side wall support of described shell while adjacent described adjustment surface, and the wherein said tangent line adjusting the part that the surperficial light beam received by described linear transducer being parallel to the Rowland circle (Rowland circle) of described concave reflection type diffraction element passes through.

According to the detailed description of the embodiment below with reference to accompanying drawing, the present invention's more characteristic sum aspect will become clear.

Accompanying drawing explanation

Accompanying drawing shows embodiments of the invention, characteristic sum aspect, and is used for together with the description principle of the present invention is described.

Fig. 1 is the schematic diagram that color image forming is shown.

Fig. 2 A is the schematic diagram of the inside configuration that color sensor unit is shown.Fig. 2 B illustrates that lid attaches to the schematic diagram of the outward appearance configuration of its color sensor unit.

Fig. 3 A illustrates the color sensor unit from top viewing.Fig. 3 B is the sectional view that color sensor unit is shown that the line A-A' that illustrates in figure 3 a obtains.

Fig. 4 A is the sectional view that the linear transducer watched from the longitudinal direction of linear transducer is shown.Fig. 4 B is the sectional view that a part for the sidewall when keeping linear transducer is shown that the line B-B' that illustrates in figure 3 a obtains.

Fig. 5 A linear transducer by attach to shown in the state of decomposing virtually shell from inclined upward and the linear transducer watched backward.Fig. 5 B illustrates and tilts from below and the linear transducer attaching to shell watched backward.

Fig. 6 schematically shows the movement in the X-direction of the light receiving element of linear transducer.

Fig. 7 A illustrate when adjusting linear transducer from the color sensor unit watched of inclined upward ground.Fig. 7 B illustrate when adjusting linear transducer from the color sensor unit watched of inclined upward ground.

Fig. 8 is the curve map of the relation of the position illustrated during the output function of monochromator in the output of light receiving element and the Y direction of linear transducer.

Fig. 9 A illustrates the relation between the light receiving element at linear transducer and the output from it.Fig. 9 B is the curve map of the output of each pixel that the light receiving element when monochromator exports predetermined Single wavelength light is shown.Fig. 9 C is the curve map of the relation illustrated between each location of pixels and wavelength of linear transducer.

Figure 10 schematically shows how to keep linear transducer by shell.

Figure 11 A illustrates from the holding member attaching to shell watched of inclined upward ground.Figure 11 B illustrates from the holding member attaching to shell watched of inclined upward ground.

Figure 12 is the sectional view that the sidewall when keeping linear transducer and holding member is shown obtained on the line C-C' shown in Figure 11 A.

Figure 13 illustrate when adjusting linear transducer from the color sensor unit watched of inclined upward ground.

Figure 14 illustrates another configuration of linear transducer adjustment instrument and holding member.

Figure 15 illustrates another configuration of the vicinity on the adjustment surface of sidewall.

Figure 16 illustrates the spectral colorimetric equipment when adjusting the position of gap parts.

Figure 17 is the curve map of the output of each pixel illustrated from the light receiving element it being formed with slot image.

Figure 18 A is that its top illustrates and forms the situation that forms slot image in state on the light receiving element of linear transducer and its underpart illustrates the diagram of the output of light receiving element at that time by Single wavelength light beam in ideal image.Each in Figure 18 B and Figure 18 C is that its top illustrates and forms the situation that forms slot image in state on the light receiving element of linear transducer and its underpart illustrates the diagram of the output of light receiving element at that time by Single wavelength light beam at imperfect image.

Figure 19 A is the skeleton view of the neighbouring part in the gap illustrated in spectral colorimetric equipment.Figure 19 B is the sectional view that the neighbouring part the gap of spectral colorimetric equipment is shown obtained from the arrow B indicated direction shown in Fig. 7 A.

Figure 20 A illustrates the neighbouring part from the gap the spectral colorimetric equipment of top viewing.Figure 20 B illustrates the neighbouring part from the gap the spectral colorimetric equipment of top viewing.

Figure 21 is the sectional view that the neighbouring part in the gap spectral colorimetric equipment is shown obtained from the arrow B indicated direction shown in Fig. 7 A.

Figure 22 illustrates from the spectral colorimetric equipment in the state which removes lid.

Figure 23 A is the schematic diagram that gap is shown.Figure 23 B is the sectional view that the neighbouring part in the gap spectral colorimetric equipment is shown obtained from the direction of the arrow C shown in Figure 10.

Figure 24 A is the schematic diagram that gap is shown.Figure 24 B be obtain with the direction from the arrow C shown in Figure 22 the diagram that the sectional view of the neighbouring part in the gap in spectral colorimetric equipment is corresponding is shown.

Embodiment

Describe each embodiment of the present invention, feature and aspect below with reference to the accompanying drawings in detail.Following of the present invention each embodiment can realize separately or where necessary or from the element of each embodiment or feature be combined in be favourable in single embodiment time realize as the combination of multiple embodiment or its feature.

The equipment that the size of the assembly described in the examples below, material, shape, positioned opposite, optical characteristics etc. can be suitable for according to the present invention and various condition and suitably change, and be not intended to limit the scope of the invention.

Hereinafter, the first embodiment of the present invention is described.First, the color image forming of the spectral colorimetric equipment be wherein provided with according to a first embodiment of the present invention is described in.Then, the color calibration using spectral colorimetric equipment is described.

(color image forming)

First, describe and formed by being provided with the image carried out according to the color image forming of the spectral colorimetric equipment of the present embodiment wherein.Fig. 1 illustrates the schematic diagram being used as the color image forming of the spectral colorimetric equipment of the pick-up unit of sense colors image be provided with according to the present embodiment wherein.Spectral colorimetric equipment 1000 has configuration described below.Each photosensitive drums 1 as image-carrier counterclockwise rotates, as shown in Figure 1 (incidentally, photosensitive drums 1C, 1M, 1Y and 1BK are corresponding with cyan, magenta, yellow and black respectively).

First, each uniformly charged in photosensitive drums 1C, 1M, 1Y and 1BK is made respectively by the associated band electric installation in Charging system 2 (2C, 2M, 2Y and 2BK).Then, according to image information optical modulation light beam (laser beam) L (LC, LM, LY and LBK) in each exported from scanning optical apparatus 300 and be irradiated on the surface of the relevant photosensitive drums in photosensitive drums 1C, 1M, 1Y and 1BK, thus form electrostatic latent image thereon.Electrostatic latent image is visualized as cyan, magenta, yellow and black toner image respectively by developing apparatus 4 (4C, 4M, 4Y and 4BK).

Meanwhile, the sheet material P be stacked on paper feeding tray 7 is supplied one by one by feed roll 8.Sheet material P is synchronously sent in transfer belt 10 by alignment roller 9 and image write timing.Then, above-mentioned toner image by by transfer roll 5 (5C, 5M, 5Y and 5BK) sequentially transfer printing and be added in transfer belt 10 transmit sheet material P on.Therefore, coloured image is formed thereon.Finally, sheet material P is pressurizeed by fixing device 12 and heats.Therefore, obtain fixing to the coloured image on sheet material P.Then, sheet material P is transmitted by exit roller 13 thus is discharged into outside equipment.

After transfer, residual toner cleaned device 6 (6C, 6M, 6Y and 6BK) removal respectively on the surface of photosensitive drums 1 (1C, 1M, 1Y and 1BK) is stayed.Then, again make the uniformly charged of photosensitive drums 1 (1C, 1M, 1Y and 1BK) by Charging system 2 (2C, 2M, 2Y and 2BK), to form next coloured image.Here, photosensitive drums 1, Charging system 2, scanning optical apparatus 300, developing apparatus 4, transfer roll 5 and fixing device 12 are called as the image processing system for forming image on sheet material.

(using the color calibration of spectral colorimetric equipment)

Next, the color calibration using spectral colorimetric equipment is described below.Spectral colorimetric equipment (hereinafter referred to as color sensor unit) 1000 is installed on just late than fixing device 12 paper transfer path, and is arranged such that with the incident angle illumination light of about 45 degree to irradiate paper surface.Color sensor unit 1000 detects and is formed and the fixing tone having each color lump on the paper surface of the image of monochrome or colour mixture color lump (color patch) from it.Then, the image forming conditions for image processing system is controlled based on the output of color sensor unit.Therefore, color calibration is performed.After image fixing, the object that the color lump that paper is formed carries out colourimetry is, considers due to sheet type or by the tone reversal that causes such as fixing and perform color calibration.

The result of the detection of being read by color sensor is transferred to printer controller personal computer (PC).Then, printer controller PC determines that whether the color reproducibility of the tone of the color lump exported is suitable.If the aberration between the tone and the tone indicated according to view data by printer controller PC of the color lump exported is within preset range, then color calibration terminates.If aberration exceeds preset range, then printer controller PC performs color calibration based on colour difference information, until aberration falls in preset range.

Therefore, by installing the tone of the coloured image that color sensor unit comes test paper is formed in color image forming.Therefore, it is possible to the tone of the coloured image that correction paper is formed.More specifically, according to color sensor unit, if cause difference between the tone of the coloured image formed on the tone indicated by printer controller PC according to view data and paper due to the difference between image forming apparatus, sheet type, environment for use, frequency of utilization etc., stable tone can be reproduced.Therefore, it is possible to realize the color calibration of higher level.

(spectral colorimetric equipment (color sensor unit))

Next, below with reference to Fig. 2 A ~ 3B, spectral colorimetric equipment is described.Fig. 2 A is the schematic diagram of the inside configuration that color sensor unit is shown.Fig. 2 B illustrates that lid attaches to the schematic diagram of the outward appearance configuration of its color sensor unit.Fig. 3 A is the top view from the color sensor unit which removes lid.Fig. 3 B is the sectional view that color sensor unit is shown that the line A-A' that illustrates in figure 3 a obtains.But Fig. 3 B shows the color sensor unit that lid attaches to it.

Be in color sensor unit 1000 is confirmed as the above-below direction for determining color sensor unit 1000 benchmark orientation by orientation light being radiated at from below the color sensor unit 1000 that horizontal detection surface 800 (see Fig. 3 B) is detected in the state of tone.In other words, being regarded as above color sensor unit 1000 above of Fig. 3 B.Set benchmark orientation for convenience of description.Color sensor unit 1000 performs the orientation detected and is not limited to benchmark orientation.

Hereinafter, each assembly forming color sensor unit 1000 is described.Light emitting diode (LED) 110 is the White LEDs being used as light source.LED 110 is installed on following sensor unit control circuit board 120.LED 110 is top view type LEDs vertically luminous with mounting surface.Because LED 110 is luminous in the ratio color range from 350 nanometers (nm) to 750nm, therefore LED 110 is called as White LED.

Sensor unit control circuit board 120 is used to the luminescence of control LED 110 and the following signal transacting for the output detected by linear transducer 170 being converted to electric signal.Illumination optics 130 is for the light beam launched from LED 110 L being irradiated to the guide-lighting optics detected on 800 (see Fig. 3 B) of surface.More specifically, illumination optics 130 is the photoconductions formed by acryl resin.

The light beam L launched from LED 110 has and is set so that the light quantity Light distribation angular characteristics that maximum and light quantity reduces along with leaving (or inclination) from surface normal direction on the surface normal direction of light-emitting area.Therefore, illumination optics 130 has the shape that light can be directed effectively to and detect on surface.

Guide-lighting optics 140 is for the optics by being directed to following gap 150 from the light detecting surface reflection.Guide-lighting optics 140 is the photoconductions formed by acryl resin, and have make the light beam on Autonomous test surface 800 to be arranged essentially parallel to detect surperficial 800 ground deflections and on the direction parallel with dispersion direction X the function of convergent beam.Dispersion direction X is defined as light beam by the direction of concave reflection type diffraction grating (concave reflection type diffraction element) 160 by wavelength separated composition.Gap 150 is arranged such that the light beam guided by guide-lighting optics 140 forms the shape of expectation on following linear transducer 170.

Concave reflection type diffraction grating 160 be configured to by dichroic reflection surface 161 make from gap 150 export beam reflection and the optics of dispersion.Concave reflection type diffraction grating 160 is the resin components manufactured by injection moulding.Dichroic reflection surface 161 has and wherein on basal plane (base surface), forms the shape of thin blazed grating (blaze grating) with spacing at equal intervals.Rowland circle R is defined in the rowland type dispersive optical system using this concave reflection type diffraction grating.

The direction vertical with the direction of the optical axis of dispersed light beam with dispersion direction X is defined as Y-direction.Therefore, Rowland circle R has length equal the diameter of the radius-of-curvature on dichroic reflection surface 161 and contact the imaginary circle of the central point on disperse reflection surface 161.Be converged onto on Rowland circle R by the light of concave reflection type diffraction grating 160 dispersion.If the basal plane on dichroic reflection surface 161 has spherical shape, then because the image on dispersion direction X forms state and the image on the Y of direction, to form state different and optical property is reduced.Therefore, basal plane is shaped as curvature on its dispersion direction X curved surface different from the curvature on the Y of direction.Therefore, it is possible to obtain enough image forming property.

Linear transducer 170 is the opticses of the light receiving element 174 comprised as array type optical receiving-member, and the photo-electric conversion element (or pixel) of multiple such as silicon (Si) photodiode and so on is arranged with array-like on dispersion direction X wherein.Linear transducer 170 receives by the dispersed light beam of concave reflection type diffraction grating 160 dispersion at light receiving element 174 place, and exports the signal corresponding with the light quantity received by each photo-electric conversion element.By be described below in detail be filled in linear transducer 170 and linear transducer 170 remains in shell 100 by the bonding agent be arranged in the space between the protuberance 103 in shell 100.

Light receiving element 174 is connected with flexible PCB 175, and this flexible PCB 175 is electrically connected with sensor unit control circuit board 120.The output of light receiving element 174 is output to sensor unit control circuit board 120 via flexible PCB 175.

The combinations thereof of optics and circuit board is accommodated or is remained on as by bottom surface and the shell 100 of box-like case that forms around the sidewall 101 of bottom surface.Linear transducer 170 is supported on the outside of shell 100 by sidewall 101.Utilize screw 200 (see Fig. 5 A) sensor unit control circuit board 120 to be fixed on from below the bottom surface of shell 100, and sensor unit control circuit board 120 is kept by shell 100.Therefore, compared with situation about self being kept by linear transducer 170 with sensor unit control circuit board 120, relatively wide space can be guaranteed around linear transducer 170.

According to this configuration, even if be energized so that when the electric treatment of the light emission operation of control LED 110 and linear transducer 170 operates in the contact of the actuating units such as utilization probe (probe) instrument, external stress is not applied directly to linear transducer 170 yet.Therefore, various characteristic is not deteriorated.

The location of each in illumination optics 130, guide-lighting optics 140 and concave reflection type diffraction grating 160 is performed by the positioning unit be arranged in shell 100.Therefore, utilize bonding agent by illumination optics 130, guide-lighting optics 140 and concave reflection type diffraction grating 160 each engage and fix in position be set up.The position of gap 150 and linear transducer 170 is adjusted to and makes to be located substantially on Rowland circle R circumferentially.Therefore, gap 150 and linear transducer 170 are engaged and are fixed to shell 100.

Housing cove 190 for the inside of covering shell 100 attaches to shell 100, to be integrally formed therewith color sensor unit 1000.In a part for housing cove 190, openning is set, by illumination optics 130 be irradiated to detect illumination light on surface 800 and detect reflection on surface 800 and the reflected light being directed to guide-lighting optics 140 by this openning.Cover glass 190b attaches to openning to prevent dust and paper powder from entering shell 100.

The linear transducer cover part 190b in the part being extended down to the inner side not only covering covering shell 100 but also the back side covering linear transducer 170 (that is, that face of not adjacent sidewall 101) is formed on housing cove 190.Utilize this configuration, after its assembling during delivery unit, or when unit is assembled into image forming apparatus, can protects and prevent linear transducer 170 to be touched.The part covered by housing cove 190 of the profile of the sidewall 101 of the dotted line instruction shell 100 shown in Fig. 2 B.

(colorimetric method)

Next, the colorimetric method for using the color sensor unit 1000 pairs of color lumps formed in the above described manner to perform colourimetry is described below.As shown in Figure 3 B, from LED 110 launch light beam (there is optical axis L 3) by illumination optics 130 and cover glass 190b transmission.What the light beam irradiation of transmission was formed on paper is used as the color lump 800 detecting surface.The light beam (having optical axis L 4) reflected by color lump 800 by cover glass 190b and guide-lighting optics 140 transmission, and leads to gap 150.Then, on gap 150, the image of wire is substantially formed by the light beam of transmission.

The light beam (having optical axis L 1) that its shape is adjusted to reservation shape is incident on concave reflection type diffraction grating 160.By reflected by concave reflection type diffraction grating 160 with the light beam of diffraction among be that the light beam (having optical axis L 2) of a diffraction light forms the slot image corresponding with each wavelength on linear transducer 170 by dispersion.Fig. 3 A as optical axis L 2 representative show the optical axis of the light beam with wavelength 550nm.

Linear transducer 170 has the light of each wavelength in the reception of light receiving element 174 place and exports the signal corresponding with received light.Sensor unit control circuit board 120 corrects based on the dichroism of White LED 110 and the spectral sensitivity of light receiving element the output of linear transducer 170.Then, the tone of the light beam (there is optical axis L 4) reflected by color lump 800 is calculated.The value of the tone of calculating is sent to printer controller PC.Therefore, colourimetry is performed to color lump 800.The invention is characterized in the configuration keeping linear transducer 170.Hereinafter, describe the configuration of linear transducer 170 self, keep the configuration of sidewall 101 of linear transducer 170 and the method for being attached and adjusting linear transducer 170.

(configuration of linear transducer)

First, the configuration of linear transducer 170 is described below in detail.Fig. 4 A is the sectional view obtained from the horizontal direction of linear transducer 170.Linear transducer 170 be configured to comprise it is provided with light receiving element 174 substrate portions 171, for utilizing the hermetic unit 172 of adhesive seal light receiving element 174 and the layer structure for the glass part 173 that covers these parts.Light receiving element 174 is configured such that multiple photo-electric conversion element (or pixel) is arranged along single direction.The surface of light receiving element 174 is set as optical receiving surface S.Deformable flexible circuit board 175 by solder bonds to and be electrically connected to substrate portions 171.

Fig. 5 A illustrate linear transducer 170 grade by the state of decomposing virtually from inclined upward and the linear transducer 170 etc. attaching to shell 100 watched backward.But, eliminate the figure of illumination optics 130.Fig. 5 B illustrates and tilts from below and the linear transducer 170 attaching to shell 100 watched backward.

Not attaching at linear transducer 170 in its state in the end of the side that it is connected with the substrate portions 171 of linear transducer 170 of flexible PCB 175 is connected with sensor unit control circuit board 120.The strengthening part be made up of glass epoxy material for strengthening the coupling part between the substrate portions 171 of linear transducer 170 and flexible PCB 175 is engaged to the back side of coupling part.Strengthening part 176 is also used as the parts utilizing following instrument firmly to support linear transducer 170.

Flexible PCB 175 and strengthening part 176 only join to the back side of the substrate portions 171 of linear transducer 170 its on be formed with the part of electrical connection, and cover this part.Flexible PCB 175 and strengthening part 176 are shaped as the remainder at the back side of the substrate portions 171 exposing linear transducer 170.Therefore, the exothermicity of linear transducer 170 is high.

Strengthening part 176 is formed support section (not shown), adjust linear transducer 170 time tool holding described in support section, to help strengthening part 176 to support linear transducer.Strengthening part 176 has enough rigidity, to such an extent as to strengthening part 176 does not make linear transducer 170 be out of shape while utilizing instrument firmly to support linear transducer 170.The shape of strengthening part 176 can be optimized alternatively according to instrument and Process Design.Therefore, it is possible to enhancing design flexibility.

(for supporting the shell of linear transducer)

Next, the configuration of the sidewall 101 of the shell 100 supporting linear transducer 170 is described below with reference to Fig. 3 A.Use the dispersive optical system of concave reflection type diffraction grating to have to be arranged in the characteristic of image on Rowland circle and light source conjugation each other.In other words, favourable optical property can be obtained by being placed on by linear transducer on Rowland circle.Therefore, in order to be placed on by linear transducer 170 on the Rowland circle R of concave reflection type diffraction grating 160, the part of its of sidewall 101 being placed linear transducer 170 is set to the tangent line being arranged essentially parallel to Rowland circle R.

Fig. 3 A as the light beam be incident on linear transducer 170 representative show the light beam of the 550nm wavelength with optical axis L 1 and L2.By gap 150 and the light beam be incident on concave reflection type diffraction grating 160 has optical axis L 1.To be reflected by concave reflection type diffraction grating 160 and the light beam be incident on linear transducer 170 has optical axis L 2.The angle formed between optical axis L 1 and L2 is less, and the optical property that can obtain is more favourable.This is the same with the light beam of another wavelength.Therefore, the position that the angle formed between optical axis L 1 and L2 while the part its of sidewall 101 being furnished with linear transducer 170 is arranged on the space guaranteeing to be provided for the position that can adjust linear transducer 170 is little as far as possible.

Next, the part of the maintenance linear transducer 170 of sidewall 101 is described in more detail with reference to figure 5A, Fig. 5 B and Fig. 4 B.Fig. 4 B is the sectional view that the part of the maintenance linear transducer 170 of sidewall 101 is shown that the line B-B' that illustrates in figure 3 a obtains.Fig. 4 B also show the cross section of the linear transducer 170 watched from its longitudinal direction.

Opening portion 102 is arranged in sidewall 101.The light receiving element 174 of linear transducer 170 is arrived by opening portion 102 by the light beam of concave reflection type diffraction grating 160 dispersion.Opening portion 102 be shaped as have by concave reflection type diffraction grating 160 diffraction and a diffracted beam (dispersed light beam) among the diffracted beam with the wavelength of 350nm to the 750nm needed for colourimetry can by its size.Linear transducer 170 adjoins it adjustment surface 104 from the outside of shell 100 is arranged on around the opening portion 102 of sidewall 101.Linear transducer 170 is fixed to sidewall 101 in the state on the surface contiguous adjustment surface 104 of glass part 173, and optical receiving surface S is towards opening portion 102.

By while the adjacent adjustment surface 104 of linear transducer 170 in the x-direction and the z-direction portable cord sensor 107 perform the adjustment of the position of following linear transducer 170.In other words, adjustment surface 104 is used as the surface (abutment surface) being adjusted linear transducer 107 by contiguous linear sensor 107.Attach at linear transducer 170 in the state of sidewall 101 and utilize linear transducer 170 to stop opening portion 102.Stop that extraneous air enters the gap of shell 100 by it by fixed adjustment surface 104 while making adjustment surface 104 and glass part 173 adjacent openings part 102 and the glass part 173 of linear transducer 170 that is positioned at around opening portion 102.Therefore, it is possible to the generation of the pollution preventing the dust due to such as paper powder and so on from entering shell 100 and cause.

Although describing opening portion 102 is the hole shape parts be arranged on sidewall 101, opening portion 102 can be formed as the otch hole by forming shape in sidewall 101 when housing cove 190 attaches to shell 100.In this case, the otch of sidewall 101 is used as opening portion 102.

Next, adjustment surface 104 is described in more detail below.Adjustment surface 104 is set to be arranged essentially parallel to dispersion direction X and the direction Y vertical with the direction of the optical axis L 2 of dispersed light beam.In addition, adjustment surface 104 is set to the tangent line of the part be arranged essentially parallel in the scope of a diffracted beam (dispersed light beam) of the wavelength of scope from 350nm to 750nm received by the linear transducer 170 be arranged on Rowland circle R." part in the scope of a diffracted beam (dispersed light beam) of the wavelength from 350nm to 750nm received by the linear transducer 170 be arranged on Rowland circle R " is a diffracted beam of the wavelength of scope from 350nm to the 750nm part crossing with Rowland circle R, as direction Y shown in from Fig. 3 A watches.Hereinafter, the part that a diffracted beam of the wavelength of scope from 350nm to 750nm is crossing with Rowland circle R is called as circular arc R a.

Adjoin in the state on adjustment surface 104 at linear transducer 170, the position on the radial direction of the Rowland circle R on adjustment surface 104 is that at least one locating optical receiving surface S at it puts the position be positioned on circular arc R a.Consider the refractive index of each in glass part 173 and hermetic unit 172 and at least one point of setting optical receiving surface S is positioned on circular arc R a.It is desirable that, the position on the radial direction of the Rowland circle R on adjustment surface 104 is above-mentioned position.But, might not necessarily just in time in above-mentioned position, but can be position in its vicinity.This is because if the position in following gap 150 is adjusted, to adjust the spot shape of the image formed on optical receiving surface S by light beam thus, then linear transducer 170 can be adjusted to enough accuracy detection dispersed light beams.

Fig. 6 schematically shows the movement the X-direction of the light receiving element 174 of the linear transducer 170 obtained from Y-direction.Adjust surperficial 174 (not shown) to be set to be arranged essentially parallel to the tangent line Rt in the Rowland circle R part crossing with the dispersed light beam received by linear transducer 170.Therefore, if linear transducer 170 moves in the X direction while the adjacent adjustment surface 104 of linear transducer 170, then optical receiving surface S moves along tangent line Rt.More specifically, the distance between optical receiving surface S and the center O of Rowland circle R in the normal direction (direction of the radius R r at the contact point place between tangent line Rt and Rowland circle R) of optical receiving surface S is constant.

Design a kind of way with high precision by linear transducer engage and be fixed to sidewall 101.More specifically, the protuberance 103 be configured to the side (outside of shell) that linear transducer 170 is adjacent is protruding is formed on sidewall 101.Protuberance 103 is arranged on following position, and one of two ends in the Y-direction of described position protuberance 103 towards the linear transducer 170 on adjacent adjustment surface 104 and protuberance 103 are near the center in the X-direction of the light receiving element 174 of the linear transducer 170 on adjacent adjustment surface 104.The space between protuberance 103 and linear transducer 170 is filled in ultraviolet curing adhesive 201.After the adjustment of the position of linear transducer 170, by applying ultraviolet to it, ultraviolet curing adhesive is solidified.Therefore, linear transducer 170 is fixed to sidewall 101.In other words, linear transducer 170 is fixed to the bonding part of sidewall 101 by protuberance 103 bonding agent be used as in the space utilizing and be filled between protuberance 103 and linear transducer 170.

(general introduction of the method for adjustment linear transducer)

The general introduction of the method for adjusting linear transducer 170 is described particularly below with reference to Fig. 7 A and Fig. 7 B.Fig. 7 A and Fig. 7 B illustrates the general introduction of the method for adjusting linear transducer 170.Fig. 7 A illustrate from inclined upward watch adjust linear transducer time color sensor unit.Fig. 7 B also illustrate from inclined upward watch adjust linear transducer time color sensor unit.By the position in its each in the direction of parallel two axles in the surface that the normal of the optical receiving surface S with light receiving element 174 is vertical and the position adjusting linear transducer 170 around the orientation of the normal of optical receiving surface S.One in two axles is the axle (that is, X-axis) along the direction (that is, incide light beam by dispersion and the dispersion direction X being divided into wavelength components) on concave reflection type diffraction grating arranging light receiving element 174.Another axle is the axle (that is, Y-axis) in the Y-direction vertical with dispersion direction with the optical axis of the light beam incided on linear transducer 170.After determining position, each pixel of linear transducer 170 associates with dispersed light beam.

(linear transducer adjustment instrument)

With reference to figure 7A, the instrument for adjusting linear transducer 170 is described.This instrument comprise the end of the X-axis for supporting the strengthening part used integratedly with linear transducer 170 adjacent instrument 501, in the Y-axis direction from its top and bottom support linear transducer 170 clamping tool 502, for pushing (urge) in the direction of its optical axis and supporting the pusher 503 of linear transducer and the monochromator 504 of Single wavelength light can be exported.Adjacent instrument 501, clamping tool 502 and pusher 503 are formed integratedly as linear transducer adjustment instrument 500.In the state of clamping linear transducer 170, on two direction of principal axis (that is, the arranged direction (X-direction) of linear transducer 170 and the direction vertical with arranged direction (Y direction)), linear transducer can be moved by mobile device (not shown) and adjust instrument 500.In addition, linear transducer adjustment instrument 500 can make linear transducer 170 rotate around the normal of optical receiving surface S.Eliminate the figure of these instruments in fig .7b.

The strengthening part 176 formed with linear transducer 170 is at the adjacent instrument 501 in its end of the side be not connected with sensor unit control circuit board 120 (that is, flexible PCB 174 extend from it side).Therefore, the position in the X-direction of linear transducer 170 is determined.Clamping tool 502 supports linear transducer 170 at four some places.Therefore, the position in the Y direction of linear transducer 170 is determined.

In the state that linear transducer 170 is kept by clamping tool 502, preferably maintain the stable hold mode met the following conditions.When watching from the direction vertical with Y-axis with X-axis, in the imaginary rectangle formed at four points by connecting linear sensor 170 contact gripping instrument 502, among the light receiving element 174 arranged with array way, arrange that in the direction of light receiving element, light receiving element is in the heart placed on O place, center.More preferably, the position of the general center (that is, cornerwise intersection point of rectangle) of above-mentioned imaginary rectangle or the center of gravity of rectangle overlaps with the position of center O substantially.According to the present embodiment, the general Center-to-Center O of above-mentioned imaginary rectangle overlaps.

By utilizing clamping tool 502 to keep linear transducer 170 and while making the adjacent adjustment surface 104 of linear transducer 170 adjust the position in gap 150, performing the adjustment of the position of linear transducer 170.The shell 100 that optical module except linear transducer 170 is engaged and secured to it is attached to the reference position for adjustment instrument.Pusher 503 makes the adjustment surface 104 (see Fig. 4 B and Fig. 5 A) on the sidewall 101 of glass part 173 latch housing 100 of linear transducer 170, thus is pushed on the direction of the normal of optical receiving surface.

Then, in the state of the linear transducer 170 adjacent adjustment surperficial 104 by keeping with clamping tool 502, temporarily determine the orientation of the position in each in the X-direction of linear transducer 170 and Y direction and the normal around its optical receiving surface S.In a state in which, the light with the wavelength from 350nm to 750nm is incident on light receiving element 174.Position in the X-direction of linear transducer 170 in this condition and Y direction is the temporary position temporarily determined in order to adjust gap.In a state in which adjustment and finally determine gap 150 position after, determine the final position in the X-direction of linear transducer 170 and Y direction.

According to the present embodiment, by clamping tool 502 being placed on the temporary transient location that initial position completes linear transducer 170.More specifically, to be kept by clamping tool 502 at linear transducer 170 and move on in the state of initial position, being incident on precision on light receiving element 174 to set the initial position of clamping tool 502 with the light being enough to the wavelength making to have 350nm to 750nm.When the illumination of the wavelength had from 350nm to 750nm being mapped on concave reflection type diffraction grating, the temporary transient location of linear transducer 170 can be performed while the output of monitoring line sensor.

(adjustment of the position in gap)

Next, the adjustment of the position in gap 150 is described below.The adjustment of the position in following execution gap 150.First, the adjacent adjustment surface 104 of linear transducer 170 is made.Then, have in the state of the light of predetermined wavelength from monochromator 504 (being omitted in fig. 7 and be illustrated in figure 7b) output, mobile gap 150 on the direction S of the optical axis of the light beam by gap 150.The light beam exported from monochromator 504 is irradiated to guide-lighting optics 140 by the top from the detection surface corresponding with color lump surface.Then, light beam to be incided on concave reflection type diffraction grating 160 by gap 150.After being reflected by concave reflection type diffraction grating 160, folded light beam is received by the light receiving element 174 of line sensor 170.

The light receiving element 174 observing linear transducer 170 while the spot shape formed move gap 150, therefore, determines to locate at it position that spot shape (fuzzy (blurred) shape of image) is intended shape.The adjustment of spot shape utilizes the following fact, that is, the light source being circumferentially positioned at Rowland circle R with by from light source incidence to concave reflection type diffraction grating 160 and the light beam reflected thereon in spot (image) conjugation circumferentially formed of Rowland circle R.The adjustment of spot shape is performed when the wavelength of the light beam exported from monochromator 504 is 350nm, 550nm and 750nm.

The reason light beam respectively with above-mentioned three wavelength being performed to adjustment is, is detected the light of the wavelength had in the scope from 350nm to 750nm by the light receiving element 174 of linear transducer 170.Among the dispersed light beam that will be detected by linear transducer 170, two ends of the light beam respectively with above-mentioned three wavelength substantially on the dispersion direction X of light receiving element 174 and center form image.Therefore, when the adjustment light beam respectively with above-mentioned three wavelength being performed to the position in gap 160 makes spot shape be the shape expected, even if do not perform the adjustment of the shape of the spot formed by light beam to all light beams of the wavelength of the gamut had from 350nm to 750nm, the spot formed by the light beam of each wavelength of the scope had from 350nm to 750nm also can have the shape of expectation.Optical axis L shown in Fig. 7 B is the optical axis of the light beam of the wavelength with 550nm.

(adjustment of the position in the Y direction of linear transducer 170)

Next, the adjustment of final location in the Y direction of linear transducer 170 and position is described below.In the adjustment of the position in the Y direction of linear transducer 170, while monochromator 504 output beam, monochromator 504 exports the light beam with the wavelength of 550nm, and the wavelength of 550nm is the centre wavelength of the LED 110 of the wavelength coverage had from 350nm to 750nm.Fig. 8 be illustrate monochromator 504 export there is the light beam of the wavelength of 550nm time the output of light receiving element 174 and the Y direction of linear transducer 170 on the curve map of relation of position.Output from light receiving element 174 is proportional with the amount of the light received by light receiving element 174.

First, linear transducer adjustment instrument 500 performs and moves the operation that linear transducer 170 reaches preset distance in the Y-axis direction, and draws the envelope of the output representing light receiving element 174.Then, linear transducer 170 is moved to the center between following two positions, is 50% of maximum output valve (Pmax) in the output valve (Psl) of described two position light receiving elements 174.

(adjustment of the position in the X-direction of linear transducer 170)

Next, the adjustment of final location in the X-direction of linear transducer 170 and position is described below.According to the present embodiment, after the location in the Y direction of linear transducer 170, perform the location in the X-direction of linear transducer 170, but it can perform in reverse order.Fig. 9 A illustrates the relation between each pixel at the light receiving element 174 of linear transducer 170 and the output from it.More particularly, the top of Fig. 9 A schematically shows the state of the light receiving element 174 of the linear transducer 170 watched from the direction vertical with Y-axis with X-axis.The bottom of Fig. 9 A illustrates the output of each pixel of above-mentioned light receiving element 174.The light beam obtained by the light beam dispersion of the 550nm wavelength by utilizing concave reflection type diffraction grating 160 to make to be exported by monochromator 504 forms spot A on the light receiving element 174 of linear transducer 170.Linear transducer 170 moves in the X-axis direction, and the light beam of the wavelength of 550nm is imported into the center pixel in the arranged direction (that is, X-direction) of the light receiving element 174 of array-like layout.When movement in the X-direction of above-mentioned linear transducer 170 and the movement in Y direction complete, the location of linear transducer 170 completes.

As mentioned above, adjustment surface 104 is set to be arranged essentially parallel to the tangent line in the adjustment surface 104 of the Rowland circle R part crossing with the dispersed light beam received by linear transducer 170.Therefore, have the following advantages in the adjustment of the position of the present embodiment in the X-direction and Y direction of linear transducer 170.More specifically, when by moving linear transducer 170 adjust the position of linear transducer 170 while adjacent adjustment surface 104, linear transducer 170 does not move up in the side of the radius of Rowland circle R.Such as, if linear transducer 170 moves as illustrated in fig. 6 in the X direction, then optical receiving surface S moves along tangent line Rt.But optical receiving surface S does not move up in the side of radius R r.Therefore, linear transducer 170 movement in the X direction makes optical receiving surface S leave Rowland circle R.Therefore, the image of dispersed light beam on optical receiving surface S forms state and changes, and spot shape is difficult to distortion.Therefore, according to the present embodiment, correcting deformed spot shape thus again to adjust the position in gap 150 be unnecessary.

(each pixel of linear transducer and associating of dispersed light beam)

Next, each pixel of light receiving element 174 is made to associate with dispersed light beam.Perform adjustment so as using with by diffraction grating 160 dispersion of concave reflection type and the speckle displacement forming each wavelength of the light beam in the wavelength coverage of 350nm to the 750nm of the effective wavelength range as LED 110 of image corresponding on linear transducer associate with the position of light receiving element 174.In other words, adjustment is performed to make to associate from the dispersion wavelength of light of test material reflection with each light receiving element of linear transducer 170.More specifically, adjustment is performed to identify the information of the position of each pixel about the light receiving element 174 corresponding with each wavelength.

Perform association for following three benchmark Single wavelength light beams, these three benchmark Single wavelength light beams have the long wavelength of the centre wavelength of 550nm in the wavelength coverage of 350nm to the 750nm of the effective wavelength range as LED 110, the short wavelength of 350nm and 750nm respectively.Each Single wavelength light beam is exported by monochromator 504 and is irradiated to the detection corresponding with color lump on the surface from top.Then, dispersed light beam is detected by linear transducer 170.

Fig. 9 B is the curve map of the output of the pixel that the light receiving element 174 when monochromator 504 exports one of three Single wavelength light beams is shown.At that time, by two pixel (N-1 will be positioned at, the pixel (N) of the center position N+1) is set as that the pixel corresponding with one of three Single wavelength light beams associates to perform, and the output valve (Psl) of each the place's light receiving element 174 wherein in described two pixels is 50% of its maximum output valve (Pmax).Association is performed for each in above-mentioned three Single wavelength light beams.

Next, the light beam of wavelength had except above-mentioned three Single wavelength and associating of pixel are described below.Fig. 9 C is the curve map of the position of each pixel that linear transducer is shown and the relation of each wavelength.More particularly, Fig. 9 C illustrates associating of wavelength except above-mentioned three predetermined Single wavelength and location of pixels.When light beam has the wavelength except above-mentioned predetermined three Single wavelength light beams, association can be performed by the information quadratic function approximate pixel position of the respective location of pixels based on expression three booking list wavelength.More specifically, the relation between wavelength X and the location of pixels Y at linear transducer 170 place can be similar to by the quadratic function of following coefficient of performance a and b and constant c.

Y=aX ²+ bX+c ... .. (expression formula 1)

Specify wavelength and about above-mentioned three booking list wavelength location of pixels between relation.Therefore, it is possible to by designated value being substituted into the value obtaining coefficient a and b and constant c in X and Y in expression formula 1.Therefore, the relation between the location of pixels in wavelength and color sensor unit 1000 is found.Therefore, it is possible to specify the dispersed light beam of any wavelength in the scope from 350nm to 750nm which pixel position to form spot in.Therefore, associated with the location of pixels of light receiving element 174 by the light beam of any wavelength of concave reflection type diffraction grating 160 dispersion.

After the sequence performing this adjustment process, ultraviolet curing adhesive 201 is applied between the protuberance 103 of sidewall 101 and linear transducer 170, shown in Fig. 5 C described above.Then, by being mapped to by ultraviolet lighting on bonding agent, protuberance 103 and linear transducer 170 are engaged with each other.Protuberance 103 and linear transducer 170 can be engaged before the associating of each pixel performing light receiving element 174 and dispersed light beam.

As mentioned above, according to the present embodiment, linear transducer 170 is engaged from outside and is fixed to the sidewall 101 of shell 100, makes it possible to the space around open linear transducer 170.Therefore, it is possible to easily guarantee for using for the instrument of apparatus for assembling with for irradiating the space for the light making Photocurable adhesive solidify.Therefore, enhance Process Design dirigibility, and enhance processibility.

According to the present embodiment, what be arranged essentially parallel to the Rowland circle of concave reflection type diffraction grating tangentially arranges adjustment surface 104 on sidewall 101.Linear transducer 170 is engaged and is fixed to the outside of sidewall 101 in the state on the adjacent adjustment surface 104 of linear transducer 170.Therefore, if equipment is miniaturized, the space for the instrument used in the adjustment of the position of linear transducer 170 also can be guaranteed fully.Therefore, it is possible to assemble linear transducer 170 with high precision when not reducing processibility and throughput rate.

But when while joining linear transducer 170 to shell during cure adhesive, bonding agent may shrink.Or according to the environment that equipment is installed, the bonding agent of solidification may thermal expansion.Therefore, the deviation of the position of linear transducer 170 may be there is.According to the present embodiment, respectively the protuberance 103 for engaging linear transducer 170 is set towards the position of linear transducer 170 two ends in the Y direction on adjacent adjustment surface 104 at protuberance 103.Therefore, due to expansion and the contraction of bonding agent, compared with the deviation of the position in its X-direction, the deviation of the position in the Y-direction of linear transducer 170 more easily can be there is.But the width in the Y-direction of light receiving element 174 has nargin to a certain extent for dispersed light beam.Therefore, even if linear transducer 170 departs from the Y direction, the output of light receiving element 174 is also difficult to change and colorimetric precision is subject to little impact.If linear transducer 170 departs from the X direction, then there is the risk that the light beam with the wavelength of 550nm can not be input to the center pixel of light receiving element 174.

According to the present embodiment, the position in the X-direction of its place's protuberance 103 towards the immediate vicinity of the light receiving element 174 of the linear transducer 170 on adjacent adjustment surface 104 arranges the protuberance 103 for engaging linear transducer 170.In other words, light receiving element 174 is engaged to sidewall 101 in the single position close to the center in X-direction.Therefore, even if linear transducer 170 expands due to the change of environment, the position of the center pixel in the X-direction of light receiving element 174 is also difficult to depart from.Light receiving element 174 extends to the both sides in X-direction around center pixel.At that time, in light receiving element 174, deviation increases with the distance with its center pixel and increases, and therefore position deviation is maximum at the pixel place in end.

On the other hand, if the position of the pixel of the end of linear transducer 170 in the X-direction towards linear transducer 170 is engaged to adjustment surface 104, then position deviation is maximum at the pixel place of its another end.Therefore, compared with situation about being bonded on by linear transducer 170 towards the position of the end pixel of in X-direction, when linear transducer 170 is engaged with the position of the center pixel in its X-direction, the absolute value of the departure of pixel can be reduced.Therefore, the corresponding relation between each pixel and the wavelength of light beam received by linear transducer 170 is difficult to change, and reduces the degeneration of optical property.

Next, the second embodiment of the present invention is described below.The each parts similar with the first embodiment are designated identical Reference numeral.Therefore, the description of this parts is eliminated.

According to the first embodiment, linear transducer 170 is maintained at outside shell 100.Therefore, linear transducer 170 may be exposed to exterior light.When linear transducer 170 is exposed to outside light, exterior light may incide on translucent glass part 173 and translucent hermetic unit 172.Then, if light receiving element 174 receives exterior light, then exist and in the output of light receiving element 174, occur noise and the risk of detection noise mistakenly.In order to address this is that, consider to perform shading to the hermetic unit 172 of linear transducer 170 and the outside surface of glass part 173.But this occlusion process may increase cost and time, and not preferred.Therefore, in a second embodiment, the countermeasure for exterior light can more simply and safely be realized.Hereinafter, the configuration according to the second embodiment is described.

Figure 10 schematically shows and how to utilize shell 100 to keep linear transducer 170 according to the present embodiment.Figure 10 illustrates to attach to the linear transducer 170 be disposed in order of shell 100, flexible PCB 175 and holding member 180, and equipment is decomposed virtually wherein.Figure 11 A illustrates from the holding member 180 attaching to shell 100 watched of inclined upward ground.Figure 11 B illustrates the holding member 180 attaching to shell 100 from watching obliquely below.The feature of the present embodiment is, linear transducer 170 is kept by holding member 180, and holding member 180 is engaged to shell 100, and therefore, linear transducer 170 attaches to shell 100.Figure 12 is the sectional view that the sidewall 101 keeping linear transducer 170 and holding member 180 is shown obtained on the line C-C' shown in Figure 11 A.

First, the shape of holding member 180 is described below.For keeping the holding member 180 of linear transducer 170 to be parts of box-like, it comprises the back portion 180a at the back side for covering the linear transducer 170 and lateral parts 180b for each side of covering linear transducer 170.The back side of linear transducer 170 is surfaces of the dorsal part on the surface on adjacent adjustment surface 104.The side of linear transducer 170 is sides when being considered to front on the surface on adjacent adjustment surface 104.The side of the attachment linear transducer 170 of holding member 180 has opening.Keep in the state of linear transducer 170 at holding member 180, the surface of glass part 173 is outstanding a little from holding member 180.In addition, keep in the state of linear transducer 170 at holding member 180, recess 182 is arranged in the part of lateral parts 180a, and flexible PCB 175 is extended to outside holding member 180 can be connected with sensor unit control circuit board 120.

According to the present embodiment, after first linear transducer 170 is attached to holding member 180, by joining holding member 180 to shell 100, linear transducer 170 is attached to shell 100.The following describes and linear transducer 170 is attached to holding member 180.Hole 183 for being applied for the bonding agent 201 holding member 180 being joined to linear transducer 170 is set in holding member 180.The bonding agent 201 being applied to hole 183 is utilized to join the back side of linear transducer 170 to holding member 180.But, there is the change of the orientation of the normal of the optical receiving surface S of light receiving element 174 in linear transducer 170.Therefore, the position of light receiving element 174 is measured by view camera (not shown).Then, relative to holding member 180 orientation of linear transducer adjusted to expect orientation after join linear transducer 170 to holding member 180.

Next, the sidewall 101 that linear transducer 170 attaches to its shell 100 is described below.Similar with the first embodiment, sidewall 101 arranges adjustment surface 104 and the opening portion 102 of the surface contiguous of the glass part 173 of linear transducer 170.In addition, sidewall 101 is arranged from shell 100 protuberance 103 outwardly.Be engaged in the both sides around its holding member 180 and in the Y direction of holding member 180 at linear transducer 170 and protuberance 103 is set at the part place with the center superposition in the X-direction of light receiving element 174.The space between holding member 180 and protuberance 103 is filled, to make holding member 180 and shell 100 be engaged with each other with bonding agent 201.

As shown in figure 12, holding member 180 is shaped as and covers the side of linear transducer 170 and the major part at the back side.Glass part 173 surface contiguous adjustment surface 104 state in, lateral parts 180b and sidewall 101 not adjacent to each other.Lateral parts 180b not exclusively covers the side of linear transducer 170.But holding member 180 is so shaped that exterior light performs multiple reflections and decays between sidewall 101 and holding member 180.Therefore, the risk being received exterior light by light receiving element 174 is reduced.

Holding member 180 is fixed in the state of the part around the opening portion 102 arranged in sidewall 101 at shell 100 of the surface contiguous of glass part 173.Therefore, the gap that extraneous air enters shell 100 from it is plugged.Therefore, it is possible to prevent the generation of the pollution caused due to the entering of dust of such as paper powder and so on.

Next, the method for the position for adjusting the linear transducer 170 kept by holding member 180 is described particularly below with reference to Figure 13.Figure 13 illustrate when adjusting linear transducer 170 from the color sensor unit watched of inclined upward ground.The adjustment of the position of linear transducer 170 is performed by adjusting two axles (that is, X-axis and Y-axis).The linear transducer adjustment instrument 600 shown in Figure 13 is formed for clamping the clamping tool 601 of holding member 180 and the pusher 602 for pushing and support holding member 180 in the direction of the optical axis by integration.Can capture in the state of holding member 180 by mobile device (not shown) mobile linear transducer adjustment instrument 600 in X-direction and Y direction at part 184 place that cuts of instrument 600 at its left and right V-arrangement.

Figure 13 also show monochromator 603.Perform the adjustment of the position of linear transducer 170 as follows.First, holding member 180 is clamped instrument 601 and clamps.Then, the adjustment surface 104 by pusher 602, the sidewall 101 abutting against shell 100 from the glass part 173 of the outstanding linear transducer 170 of holding member 180 being formed.At that time, the center of the point supported by clamping tool 601 is substantially made substantially to coincide with one another with the center of gravity of the holding member 180 keeping linear transducer 170.Therefore, it is possible to clamp holding member 180 in steady state (SS).Similar with the first embodiment, use monochromator 603 to perform the adjustment of the position of linear transducer 170.

After the position adjustment completing linear transducer 170, be filled in holding member 180 by divider 202 with ultraviolet curing adhesive 201 and be arranged on the space between the protuberance 103 on holding member 180 and sidewall 101.Then, by solidifying ultraviolet curing adhesive 201 with Ultraviolet radiation.Therefore, holding member 180 and linear transducer 170 are kept by sidewall 101.According to the present embodiment, as shown in figure 13, recess 103a is arranged on protuberance 103.Therefore, by arranging recess 103a by this way, divider 202 can be utilized from Y-direction ultraviolet curing adhesive 201 packing space.Therefore, be difficult to the interference occurring to adjust instrument 600 with linear transducer, and be convenient to adjustment.

According to the present embodiment, adjusting linear transducer 170 after the orientation of the normal of optical receiving surface S relative to holding member 180, linear transducer 170 and holding member 180 are attached to one another.Therefore, it is possible to come by the orientation adjusted in the above described manner around the normal of optical receiving surface S with the position of degree of precision determination light receiving element 174 relative to the dispersed light beam exported from concave reflection type diffraction grating 160.Making after holding member 180 and linear transducer 170 be attached to one another, can also in utilize linear transducer to adjust adjustment that instrument 600 clamps the orientation performing the normal around optical receiving surface S in the state of holding member 180.

But, clamp compared with the situation of direction of adjustment in the state of holding member 180 with utilizing linear transducer to adjust instrument 600, the adjustment around the orientation of the normal of the optical receiving surface S of linear transducer 170 to be easy to before holding member 180 and linear transducer 170 are attached to one another direction of adjustment in advance relatively.Therefore, it is possible to reduce the time performing the cost of whole assembling process.In addition, there is no need as linear transducer adjustment instrument 600 provides adjustment linear transducer 170 around the function of the orientation of the normal of optical receiving surface S.Therefore, it is possible to simplification instrument.

Figure 14 illustrates another configuration of holding member and linear transducer adjustment instrument.Holding member 185 holding member 185 cover the side of linear transducer 170 and the back side most of in similar according to the holding member of the second embodiment.But the combiner that holding member 185 attaches to frame of plastic 186 by steel plate 187 is wherein formed.Then, in the clamping part 611 of linear transducer adjustment instrument 610, electromagnet is used.Therefore, it is possible to removably clamp holding member 185.Two pillars 612 arranged by linear transducer adjustment instrument 610, for supporting and Detents part 185 with degree of precision.Therefore, linear transducer adjustment instrument 610 is configured to linking (engage) holding member 185 with high precision by the arrow indicated direction shown in Figure 14.The configuration of holding member 185 can simplify the configuration of linear transducer position adjusting tool 610.

Figure 15 illustrates another configuration of the vicinity on the adjustment surface 104 of sidewall 101.Especially, Figure 15 illustrates the position of the attachment linear transducer 170 on the sidewall 101 of the color sensor unit 1000 watched from the outside.As shown in figure 15, adjustment surface 104 can be formed on the recess of sidewall 101.Utilize this configuration, in the state on the adjacent adjustment surface 104 of the linear transducer 170 kept by holding member 180, wall surface 101a is formed not adjoin holding member 180, the periphery of aspect-oriented part 180b and surround the outside of lateral parts 180b.Utilize this configuration of wall surface 101a, the risk of incidence of external light on hermetic unit 172 and glass part 173 can be reduced further.In addition, make it cannot not be equipped with adjacently adjustment holding member 180 by forming wall surface 101a and towards the fin (rib) etc. with encirclement lateral parts 180b, similar effect can be obtained.When keeping forming wall surface 101a when enough distances with holding member 180, even if make to perform the adjustment in each in the X-direction of linear transducer 170 and Y-direction, wall surface 101a is adjacent holding member 180 also.

If equipment does not have the holding member 180 formed like that as described in the first embodiment, then can form the wall surface 101a being configured to the outside surrounding linear transducer 170 similarly.In this case, when keeping forming wall surface 101a when enough distances with linear transducer 170, even if make to perform the adjustment in each in the X-direction of linear transducer 170 and Y-direction, wall surface 101a also not contiguous linear sensor 170.Utilize this configuration of wall surface 101a, the risk of incidence of external light on hermetic unit 172 and glass part 173 can be reduced further.

According to the present embodiment, similar with the first embodiment, be engaged for the holding member 180 receiving linear transducer 170 and be fixed to the sidewall of shell 100.Therefore, even if equipment is miniaturized, the space for instrument when adjusting the position of linear transducer 170 also can be guaranteed fully.Therefore, it is possible to assemble linear transducer 170 with high precision when not reducing processibility and throughput rate.

In addition, according to the present embodiment, similar with the first embodiment, holding member 180 covers the side of linear transducer 170 and the major part at the back side.Therefore, risk on the hermetic unit 172 of incidence of external light on-line sensor 170 and glass part 173 and ambient light is reduced to the risk on light receiving element 174.Therefore, it is possible to reduce the risk of the risk occurring noise in the output of light receiving element and the detection occurring mistake.

In the third embodiment of the present invention, the method for the position for adjusting the gap described in the first embodiment is described below in detail.

(for adjusting the method for the position in gap)

The method of the adjustment of the position in the gap 150 when the assembling of spectral colorimetric equipment 1000 is described below.Figure 16 illustrates the spectral colorimetric equipment 1000 when adjusting the position in gap 150 from inclined upward viewing.When assembling spectral colorimetric equipment 1000, in order to know spectroscopic behaviour significantly, comprising substituting of the light source 110 of the White LED of the light of the light beam of the many wavelength be mixed with each other as being used as to launch, being used as reference light source 504 for the monochromator launching predetermined Single wavelength light beam.

Light from reference light source 504 incides in guide-lighting optical system, by gap 150 and concave reflection type diffraction grating 160, and on the light receiving element 174 of linear transducer 170, forms the image as slot image.L axle shown in Figure 16 is defined as with the center 150b (see Figure 19 B) of opening portion (slotted section) 150a (see Figure 19 B) by gap 150 and the axle that overlaps of the optical axis L 1 being incident on the supercentral light beam on the dichroic reflection surface 161 of concave reflection type diffraction grating 160.Optical axis L 1 is defined as the optical axis in gap 150.If the imaginary surface configured by the edge of opening of gap opening part 150a is regarded as open surfaces, then according to the present embodiment, the line vertical with center, the opening portion 150b of open surfaces overlaps with L axle.

While observing the dichroic reflection surface 161 according to the opening in the slot image on the light receiving element 174 of the present embodiment and gap 150, the adjustment of position in execution L direction of principal axis (that is, the S direction shown in Fig. 7 B) and the adjustment of the rotation around L axle.The deterioration of the formation state of the slot image on the light receiving element 174 that causes due to component accuracy, assembly error etc. can be prevented by performing the adjustment of this gap.Therefore, it is possible to realize high colorimetric precision.In a first embodiment, the adjustment of the position on L direction of principal axis (that is, the S direction shown in Fig. 7 B) is described.But, if necessary, also the adjustment of the rotation around L axle can be performed in view of required precision.

Figure 17 illustrates the output of the pixel of the light receiving element 174 it being formed with slot image.Width on the dispersion direction X of each pixel of light receiving element 174 is less than the width of slot image.Therefore, slot image is formed on the multiple pixels on dispersion direction X.Therefore, the spot width on the dispersion direction X of slot image is defined as follows.More specifically, the envelope of the output of the pixel of light receiving element 174 is drawn as illustrated in fig. 17.When envelope is when being cut open relative to the horizontal Psl place of specific incision (slice) exporting maximal value Pmax, the distance between two intersection points on envelope is defined as spot width.According to the present embodiment, 50% of the maximal value Pmax of output is set to the horizontal Psl of incision.

Figure 18 A comprises and illustrates and to form in state the top of the appearance forming slot image in ideal image by Single wavelength light beam and the bottom of output of light receiving element 174 is at that time shown.If the output of light receiving element 174 can be obtained by Single wavelength light beam as shown in Figure 18 A, then can according to the output being obtained high precision by the light beam of concave reflection type diffraction grating 160 dispersion and each wavelength accordingly.Therefore, it is possible to realize high colorimetric precision.

If determine the position of optics on shell 101 of such as guide-lighting optical system 140, concave reflection type diffraction grating 160 and linear transducer 170 and so on as being engineered, the ideal image shown in Figure 18 A can be obtained and form state.But the relation between the position not being based upon optics due to positioning error and component accuracy as designed, sometimes, can not obtain ideal image and form state.Therefore, colorimetric precision reduces.Each in Figure 18 B and Figure 18 C comprises the bottom illustrating and formed the top forming the appearance of slot image in state on the light receiving element 174 of linear transducer 170 and the output that light receiving element 174 is at that time shown by Single wavelength light beam at imperfect image.

Such as, if concave reflection type diffraction grating 160 departs from L direction of principal axis, then the image forming position of slot image departs from.Therefore, as shown in figure 18b, slot image is thicker.Then, with formed the quantity of the pixel that the slot image that formed in state covers by ideal image compared with, slot image covers more substantial pixel.Therefore, among dispersed light beam, the light beam with specific wavelength is incident in the original incident pixel thereon of the light beam with another wavelength.Therefore, colorimetric precision reduces.

Such as, if concave reflection type diffraction grating 160 around L axle rotate, if or light receiving element 274 rotate around optical axis L 2, then slot image rotate, as shown in figure 18 c.Then, with formed the quantity of the pixel that the slot image that formed in state covers by ideal image compared with, slot image covers more substantial pixel.Therefore, similar with the situation shown in Figure 18 B, among dispersed light beam, the light beam with specific wavelength is incident in the original incident pixel thereon of the light beam with another wavelength.Therefore, colorimetric precision reduces.

By gap 150 mobile on L direction of principal axis and rotate gap 150 around L axle and perform adjustment and make to form slot image in above-mentioned ideal image formation state.

(configuration for the adjustment of gap position)

Next, the configuration for gap adjustment is described below.Figure 19 A is the skeleton view of the part of the vicinity in the gap 150 illustrated in spectral colorimetric equipment 1000.Figure 19 B is from the sectional view near the gap 150 illustrating spectral colorimetric equipment 1000 that the arrow B indicated direction shown in Figure 19 A obtains.Gap 150 comprises and is incident on light beam on the gap 150 opening portion 150a by it.According to the present embodiment, gap 150 is that the center 150b got around on the longitudinal direction of notch portion 150a becomes cylindrical shape.In addition, gap 150 is included in the composition surface 150d on its external peripheral surface and sliding surface (hereinafter referred to as the slidingsurface) 150c as the surface parallel with L axle.

Shell 100 is equipped with guiding surface 100b and 100c as the surface parallel with L axle and fixed surface 100a.When watching from L direction of principal axis, guiding surface (the first guiding surface) 100b and guiding surface (the second guiding surface) 100c is arranged to formation V-arrangement.Although be described below in detail, adjoin at slidingsurface 150c in the state of guiding surface 100b and 100c and perform the position in gap 150 and the adjustment of orientation.In other words, guiding surface 100b and 100c is used as the adjustment surface in gap 150, and slidingsurface 150c is used as the abutment surface of adjacent guiding surface 100b and 100c.

The small gap that setting bonding agent is filled between composition surface 150d and fixed surface 100a.After completing adjustment, the bonding agent of filling in the gap between fixed surface 100a and composition surface 150d is solidified.Therefore, gap 150 is engaged and is fixed to shell 100.According to the present embodiment, slidingsurface 150c adjoins each in guiding surface 100b and 100c, and composition surface 150d is engaged to fixed surface 100a.Adjacent and between the surfaces joint between the surfaces according to the present invention is not limited thereto.In brief, perform adjacent to the surface parallel with L axle and to engage be enough.Therefore, slidingsurface 150c and composition surface 150d can be identical surface.

While exporting Single wavelength light beam from the monochromator as reference light source 504, to be clamped by instrument (not shown) in gap 150 and slidingsurface 150 adjoins in the state of guiding surface 100b and 100c, perform the adjustment in gap.First, gap is moved on L direction of principal axis, and its position is determined.More specifically, gap 150 is moved to the narrowest position of spot width on L direction of principal axis.

When spot width is the narrowest, equipment is in gap opening part 150a and is arranged in state on Rowland circle R, makes to be maximized by the amount of the light beam of diffraction grating 160 dispersion of concave reflection type and convergence.In a state in which, the amount of the light beam received by light receiving element 107 is maximum.Therefore, the output of light receiving element 107 is the highest.According to the present embodiment, export the light beam respectively with the wavelength of 450nm, 550nm and 650nm from monochromator.Then, the position of gap 150 on L direction of principal axis is defined in the mean place place of the narrowest position of the spot width corresponding with each wavelength.If the coordinate of gap on L direction of principal axis corresponding with above-mentioned three wavelength is respectively defined as L1, L2 and L3, then the coordinate of mean place can be provided by expression formula (L1+L2+L3)/3.

Therefore, according to the present embodiment, for converge to linear transducer 170 light receiving element 174 dispersion direction X on center and both sides, center the light beam with three wavelength for the spot width mean place place that becomes the narrowest position determine the position in gap.Therefore, it is possible to determine the spot width formed by each light beam converged on light receiving element 174 with high precision.450nm, 550nm and 650nm is not limited to from the wavelength of the light beam of monochromator output.Other wavelength can be used, as long as this wavelength is the wavelength converging to the center on dispersion direction X and the light beam on both sides, center.The position in gap can be determined at the average place of four or more corresponding with a this wavelength respectively position.

Next, gap 150 rotates around L axle.Gap 150 rotates around the center 150b being used as rotation center.Then, the orientation in gap 150 is set so that spot width is the narrowest.At that time, the light beam with the wavelength of 550nm is exported from monochromator.According to the present embodiment, the narrowest spot width is corresponding with the width of about three pixels of light receiving element 174.Therefore, it is possible to form slot image around the orientation of L axle by the position on the L direction of principal axis in adjustment gap 150 and gap 150 on light receiving element 174 in ideal image formation state.

Similar with the adjustment of the position on its L direction of principal axis, can by using the adjustment on average performing the rotation around L axle in gap 150 of the orientation that spot width is the narrowest for there is the light beam of three wavelength.

In the present embodiment, slidingsurface 150c and guiding surface 100b with 100c is all the surface parallel with L axle.Gap 150 is moved on L direction of principal axis by making the adjacent slidingsurface 150c of guiding surface 100b and 100c.Therefore, it is possible to prevent gap 150 from moving up in the side except L direction of principal axis, and the adjustment of the position in gap 150 can be performed with high precision.According to circular arc mobile arc-shaped surface formed on L direction of principal axis that the slidingsurface 150c of the present embodiment is by the center 150b place of Shi Qi center on the longitudinal direction of opening portion 150a.In other words, when watching from the direction of L axle, slidingsurface 150c has the circular shape at the center 150b place of its center on the longitudinal direction of opening portion 150a.Guiding surface 100b with 100c is used as the tangent line contacting the sliding surface 150c with circular shape, and adjacent slidingsurface 150c is to insert slidingsurface 150c in-between.Therefore, even if when rotating gap 150 around L axle, also the center 150b in gap 150 can be placed on fixed position place.Therefore, it is possible to prevent gap 150 from moving up except the side except the direction that L axle rotates as adjustment direction.Therefore, it is possible to the adjustment in done with high accuracy gap.

Figure 20 A and Figure 20 B illustrates near the gap 150 of the spectral colorimetric equipment 100 of top viewing.As shown in FIG. 20 A, be substantially parallel with L axle surface according to the composition surface 150d of the present embodiment with fixed surface 100a.It is uniform that distance between gap 150 and shell 100 is set on L direction of principal axis.Distance between composition surface 150d and fixed surface 100a can be set to be uniform, and has nothing to do with the position of gap 150 on L direction of principal axis.

If the distance between gap 150 and shell 100 is not uniform on L direction of principal axis, as the distance as shown in fig. 20b between composition surface 150d' and fixed surface 100a', then there is following problem.More specifically, although the space bonding agent 112 between gap 150 and shell 100 is filled and bonding agent 112 is cured subsequently, the layer of bonding agent 112 shrinks when solidifying.In some installation environments of equipment, the layer of bonding agent 112 may thermal expansion.At that time, in the configuration shown in Figure 20 B, the thickness of bonding coat 112' is not uniform on L direction of principal axis.Therefore, gap 150' may changing due to the imbalance between tension force Fa and Fb that caused by cure shrinkage pointed by arrow R.When bonding coat 112 thermal expansion, gap 150' changes in the opposite direction.

On the other hand, according to the present embodiment, as shown in FIG. 20 A, bonding coat 112 is set on L direction of principal axis is uniform.Therefore, it is possible to prevent the gap 150 caused due to cure shrinkage or thermal expansion from moving on L direction of principal axis.

Figure 21 is from the sectional view near the gap that spectral colorimetric equipment is shown that the arrow B shown in Figure 19 A obtains.The cylindrical external peripheral surface at the center 150b place of composition surface 150d Shi Qi center on the longitudinal direction of opening portion 150a.Therefore, even if in gap 150 when L axle rotates, the distance between composition surface 150d and fixed surface 100a does not also change.If the cylindrical external peripheral surface at the center 150b place of composition surface 150d Bu Shiqi center on the longitudinal direction of opening portion 150a, then distance in-between changes.If distance in-between changes, then the thickness of bonding coat 112 changes.Therefore, when cure adhesive, its amount of shrinking changes.After bonding coat 112 solidifies, the position in gap 150 may change around the orientation of L axle with it.Therefore, can not stably manufacturing equipment.

According to the configuration of the present embodiment, the external peripheral surface at the center 150b place of composition surface 150d Shi Qi center on the longitudinal direction of opening portion 150a.Therefore, even if when performing the adjustment rotated, the distance between composition surface 150d and fixed surface 100a does not also change.Therefore, the thickness of bonding coat 112 is difficult to change.Therefore, it is possible to prevent the change of amount of cure shrinkage of the bonding agent 112 caused due to the change of the thickness of the bonding coat 112 caused by the adjustment performing rotation or the change of the amount of its thermal expansion from occurring.

According to the present embodiment, the quantity of bond sites is set to one.But, more preferably, another similar bond sites is set in the relative side striding across gap 150, gap 150 is inserted between bonding coat 112.Utilize this configuration, offset the power of the position in the change gap 150 caused due to the cure shrinkage of bonding agent.Therefore, it is possible to suppress the change of the position in the gap 150 caused due to the cure shrinkage of bonding agent.

The cylindrical part 150c that formed integral with one another and opening portion 150a is comprised according to the gap 150 of the present embodiment.But the configuration according to gap of the present invention is not limited thereto.Can will comprise the parts of opening portion and comprise the isolation of components of cylindrical part.

Therefore, according to the present embodiment, adjacent guiding surface 100b and 100c being used as adjustment surface in gap 150, makes it possible to the position adjusted on the optical axis direction in gap 150.Therefore, it is possible to the position in high precision adjustment gap and orientation.In addition, can prevent the image of the slot image caused due to the parts precision, assembly error etc. of gap 150, concave reflection type diffraction grating 160 and light receiving element 107 from forming the degeneration of state by this adjustment.

Next, the fourth embodiment of the present invention is described below.The parts except gap 2150 and shell 2100 of spectral colorimetric equipment 1000 with according to the parts of the first embodiment shape and function aspects similar.Therefore, parts are designated the Reference numeral identical with the first embodiment, and eliminate its description.According to the first embodiment, perform the position adjustment on the L direction of principal axis in gap and its rotation around L axle adjustment.But if the rotation of the slot image on light receiving element caused due to positioning error and parts precision falls in permissible range, then gap is unnecessary around the adjustment of the rotation of L axle.Therefore, as long as perform the adjustment of the position on the L direction of principal axis in gap.About the 4th embodiment, the adjustment that the following describes iff the position on the L direction of principal axis performing gap then can perform the configuration of the equipment of the adjustment of the position in gap with high precision as the adjustment in gap.

Figure 22 illustrate from inclined upward watch from the spectral colorimetric equipment 1000 which removes lid.Figure 23 A is the schematic diagram that gap 2150 is shown.Figure 23 B is from the sectional view near the gap that spectral colorimetric equipment is shown that the arrow C indicated direction shown in Figure 22 obtains.Gap 2150 comprises incident light by its opening portion 2150a and as the surface parallel with L axle and slidingsurface 2150b and 2150c be arranged on its external peripheral surface.Guiding surface 2100b and 2100c as the surface parallel with L axle is formed in shell 2100.

While slidingsurface 2150b and slidingsurface 2150c respectively adjacent guiding surface 2100b and guiding surface 2100c, gap 2150 is moved on L direction of principal axis.Therefore, similar with the first embodiment is can adjust gap 2150 with high precision on L direction of principal axis.In addition, according to the present embodiment, slidingsurface 2150b and 2150c is formed flat surface and adjoins guiding surface 2100b and 2100c respectively.Therefore, the angle relative to shell 2100 around L axle in gap 2150 is determined uniquely.Therefore, it is possible to stably move gap 2150.

According to the first embodiment, perform adjustment, that is, the movement on L direction of principal axis and the rotation around L axle of the both direction in gap.In addition, use bonding agent that shell is fixed in gap.But, according to the present embodiment, gap 2150 can be fixed by the adjustment of the execution only adjustment in a direction, the position namely only on the L direction of principal axis in gap.Therefore, the push part 126 of such as leaf spring and so on is utilized to be fixed on shell 2100 in gap 2150.Push part 126 is used to add the quantity of assembly.But, the filling of bonding agent and the assembling process of solidification can be eliminated.Therefore, it is possible to mounting equipment simply.

In addition, gap and shell can be formed the shape as Figure 24 A and Figure 24 B illustrates respectively.Figure 24 A is the schematic diagram that gap 3150 is shown.Figure 24 B is the diagram corresponding with sectional view that the neighbouring part in the gap spectral colorimetric equipment is shown obtained from the direction of the arrow C shown in Figure 22.Figure 24 A and the gap shown in Figure 24 B 3150 have substantially similar with the gap 2150 shown in Figure 23 configuration.But Figure 24 A and the gap shown in Figure 24 B 3150 are equipped with linking portion 3150d, linking portion 3150d has the concave shape linked with instrument and makes easily to be kept by instrument.In addition, as shown in fig. 24b, the guiding surface 2100b of adjacent slidingsurface 3150b can be configured by two parts be divided into as track (rail).Therefore, form guiding surface 2100b with rail-like, make it possible to determine that gap 3150 is around the angle of L axle relative to shell 2100 with degree of precision.

In the configuration shown in Figure 24 A and Figure 24 B, shell 2100 forms transition (tapered portion) 2100d.By the space utilizing bonding agent to fill the arrow instruction near transition 2100d, join gap 3150 to shell 2100.Therefore, arrange transition 2100d, make when with bonding agent packing space, bonding agent is accumulated in each space between transition 2100d and gap 3150.Therefore, the contact area between bonding agent and shell 2100 and the contact area between gap 3150 and bonding agent increase.Therefore, gap 3150 can be more firmly fixed to shell 2100.

Therefore, the 4th embodiment can adjust the position in gap similarly with the 3rd embodiment with high precision.Utilize this adjustment, the image that can prevent assembly error and component accuracy due to gap 150, concave reflection type diffraction grating 160 and light receiving element 107 from causing forms the deterioration of state.

Although reference example describes the present invention, should be appreciated that and the invention is not restricted to the disclosed embodiments.

Claims

1. a spectral colorimetric equipment, is characterized in that, comprising:

Be configured to the concave reflection type diffraction element making incident beam dispersion;

Comprise the linear transducer of multiple photo-electric conversion element, each in described multiple photo-electric conversion element is configured to receive the light beam by the dispersion of described concave reflection type diffraction element;

The shell of box-like, the sidewall that described shell comprises bottom surface and arranges around described bottom surface, wherein said shell is configured to the described concave reflection type diffraction element of upper support within it;

Coating member, described coating member is configured to the inner side covering described shell; And

Opening portion, described opening portion to be formed in the described sidewall of described shell and to be arranged such that by the light beam of described concave reflection type diffraction element dispersion by described opening,

Wherein said linear transducer is supported on the outside of the sidewall of described shell, thus receives by described concave reflection type diffraction element dispersion and by the light beam of described opening portion, and

Wherein said coating member comprises the linear transducer cover part covered by the outside of the described linear transducer of the outside-supporting of the sidewall of described shell.

2. a spectral colorimetric equipment, is characterized in that, comprising:

Shell, described shell comprises sidewall and is configured to support described concave reflection type diffraction element and described linear transducer;

Junction surface, described junction surface is arranged on the sidewall of described shell, wherein utilizes the bonding agent be arranged between described junction surface and described linear transducer described linear transducer to be fixed to the sidewall of described shell; And

Wherein said junction surface is disposed in and strides across described linear transducer position respect to one another along vertical with the direction of the rowland radius of a circle of described concave reflection type diffraction element and also vertical with arranging the direction of described multiple photo-electric conversion element direction, and

Wherein said linear transducer is supported on the outside of the sidewall of described shell, thus receives by described concave reflection type diffraction element dispersion and by the light beam of described opening portion.

3. spectral colorimetric equipment according to claim 2, wherein said junction surface is arranged on the position corresponding with the center on the direction of described multiple photo-electric conversion element arranging described linear transducer of described multiple photo-electric conversion element.

4. a spectral colorimetric equipment, is characterized in that, comprising:

Gap parts, are formed with the gap of light beam by it from detecting surface guiding in the parts of described gap;

Be configured to the concave reflection type diffraction element making incident beam dispersion, be wherein incident upon on described concave reflection type diffraction element by the light beam in the gap of described gap parts;

Comprise the linear transducer of multiple photo-electric conversion element, each in described multiple photo-electric conversion element is configured to receive the light beam by the dispersion of described concave reflection type diffraction element; And

Shell, described shell is configured to support described gap parts, described concave reflection type diffraction element and described linear transducer,

Wherein substantially be incident on the first parallel guiding surface of the direction of the optical axis of the light beam on described concave reflection type diffraction element with the gap by described gap parts and the second guiding surface is formed in the housing, and each guiding surface in the first guiding surface and the second guiding surface is the adjustment surface being adjusted the position of described gap parts on the direction of described optical axis in the state that can adjoin described first guiding surface and the second guiding surface at described gap parts by mobile described gap parts.

5. spectral colorimetric equipment according to claim 4, wherein fixed surface is formed in the housing, for described gap components bonding is formed in the parts of described gap to the composition surface of described shell, wherein bonding agent is filled between described gap parts and described fixed surface, and described fixed surface and described composition surface are substantially parallel with the direction of described optical axis.

6. spectral colorimetric equipment according to claim 4, wherein to be formed on the parts of described gap and the surface being configured to adjacent described first guiding surface and the second guiding surface is if watched from the direction of described optical axis, as the arc-shaped surface of the circular arc centered by the center in the gap of described gap parts, and

If wherein watched from the direction of L axle, then described first guiding surface and the second guiding surface adjoin the tangent line of described arc-shaped surface as described arc-shaped surface while described arc-shaped surface is between described first guiding surface and the second guiding surface.

7. an image forming apparatus, is characterized in that, comprising:

Image processing system, described image processing system is configured to form image on recording materials;

Concave reflection type diffraction element, described concave reflection type diffraction element is configured to make incident beam dispersion, is wherein incident upon on described concave reflection type diffraction element by the light beam in the gap of described gap parts;

Control device, described control device is configured to the image forming conditions controlling described image processing system based on the output of described linear transducer; And

Wherein substantially be incident on the first parallel guiding surface of the direction of the optical axis of the light beam on described concave reflection type diffraction element with the gap by described gap parts and the second guiding surface is formed in the housing, and each guiding surface in the first guiding surface and the second guiding surface is the adjustment surface that can be adjusted the position of described gap parts on the direction of described optical axis described gap parts being attached to described first guiding surface and the second guiding surface while by mobile described gap parts.

8. the assembly method of a spectral colorimetric equipment, for linear transducer is installed to shell, described linear transducer comprises multiple photo-electric conversion element, each in described multiple photo-electric conversion element is configured to receive the light beam by the dispersion of concave reflection type diffraction element, described shell is configured to support the described concave reflection type diffraction element making incident light beam dispersion thereon, it is characterized in that, described assembly method comprises:

While described linear transducer being attached to adjustment surface, adjust the position of described linear transducer, described adjustment surface is the outer surface of the sidewall of described shell and is parallel to the tangent line of the Rowland circle of described concave reflection type diffraction element; And

Described linear transducer is joined to described sidewall by the space utilizing bonding agent to be filled between described linear transducer and described sidewall while described linear transducer being attached to described adjustment surface.